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Proceedings Paper

Fibre Optic Two Polarization Interferometer With Unambiguous Digital Readout And Its Application As Remote Strain Sensor
Author(s): Norbert Furstenau
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Paper Abstract

For overcoming the ambiguity of fringe counting in fibre optic interferometers with remote readout two phase shifted (π/2) interference signals are produced employing the residual birefringence of non-ideal monomode fibres. A simple logic circuit determines the sign of the measurand change corresponding to the sign of the phase shift and feeds the counting pulses into an up-down counter. The method is tested by strain measurements with jacketed as well as bare sections of fibre employing a Mach-Zehnder setup.

Paper Details

Date Published: 6 October 1986
PDF: 6 pages
Proc. SPIE 0630, Fibre Optics '86, (6 October 1986); doi: 10.1117/12.963610
Show Author Affiliations
Norbert Furstenau, Institut fur Flugfuhrung (West Germany)


Published in SPIE Proceedings Vol. 0630:
Fibre Optics '86
Lionel R. Baker, Editor(s)

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